Specifications:

- Voltage measurement range: DC 7-55V (red display: DC 7-40V)

- Working current: ≤ 20mA

- Display mode: LED screen

- Measurement of ternary lithium batteries (L): 3S~12S

- Measurement of lithium iron batteries (F): 3S~14S

- Acid battery measurement: 12V/24V/36V/48V

- Product size: 46 * 15 * 3mm

Features:

1. Versatile Battery Measurement:

   The device supports a variety of battery types including ternary lithium (L03 S to L12 S), iron lithium (F03 S to F14 S), and acid batteries (12V/24V/36V/48V), making it adaptable to numerous applications.

2. Custom Voltage Settings:

   Users can set personalized voltage values for fully charged and fully discharged states, providing tailored monitoring for different battery specifications and ensuring accurate battery level readings.

3. Low Voltage Alarm:

   A low voltage alarm is activated when the battery level drops to 10% or lower, with a flashing red battery grid alerting users to recharge the battery promptly, preventing unexpected power loss.

4. Power-off Memory:

   The indicator retains its settings and battery status even when powered off, ensuring continuity and convenience by eliminating the need to reset the device each time it is powered back on.

5. User-friendly Operation:

   The device features a straightforward single-button control: a q